Two movement time lock
US4643010A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Mar 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7034
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A two movement time lock for bank vault doors and the like including a lock case for enclosing the timer units and a cover having transparent portions through which the dials of the timer units can be viewed. A pivoted integral locking lever of generally inverted distorted "T" shaped configuration has a pair of oppositely extending foot formations to be engaged and moved by trip formations of the timer units and a spring biased lever is interlinked with the locking lever above the pivot for normally positioning the locking lever at a cocked position when timer unit dials are displaced from the zero position. A pivoted snubber-bar blocking lever in the lock case is normally spring biased to a release position freeing a snubber bar to move to an unlocking position and a spring biased plunger has a first plunger position for forcing the blocking lever to snubber-bar blocking position and has a portion engagable by the locking lever for releasably restraining the plunger in such position when the locking lever is in cocked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.